commit: add a way to return more information from the chunkselector

Before this patch, the chunkselector for record or crecord was used to return
the list of hunks that were selected by the user. The goal of this series is to
reintroduce the toggle amend feature for crecord. To do so, we need to be able
to return more than just the selected hunks from the chunkselector but also
the information: is amend mode toggled. This patch adds a new return value for
chunkselectors that will be used to implement the toggle amend feature in
crecord.

mercurial/cmdutil.py

@@ -70,11 +70,11 b' def recordfilter(ui, originalhunks, oper'
     testfile = ui.config('experimental', 'crecordtest', None)
     oldwrite = setupwrapcolorwrite(ui)
     try:
-        newchunks = filterchunks(ui, originalhunks, usecurses, testfile,
-                                 operation)
+        newchunks, newopts = filterchunks(ui, originalhunks, usecurses,
+                                          testfile, operation)
     finally:
         ui.write = oldwrite
-    return newchunks
+    return newchunks, newopts
 
 def dorecord(ui, repo, commitfunc, cmdsuggest, backupall,
             filterfn, *pats, **opts):
@@ -121,9 +121,10 b' def dorecord(ui, repo, commitfunc, cmdsu'
 
         # 1. filter patch, so we have intending-to apply subset of it
         try:
-            chunks = filterfn(ui, originalchunks)
+            chunks, newopts = filterfn(ui, originalchunks)
         except patch.PatchError as err:
             raise error.Abort(_('error parsing patch: %s') % err)
+        opts.update(newopts)
 
         # We need to keep a backup of files that have been newly added and
         # modified during the recording process because there is a previous
@@ -3201,7 +3202,7 b' def _performrevert(repo, parents, ctx, a'
 
         try:
 
-            chunks = recordfilter(repo.ui, originalchunks)
+            chunks, opts = recordfilter(repo.ui, originalchunks)
             if reversehunks:
                 chunks = patch.reversehunks(chunks)
 

mercurial/crecord.py

@@ -454,7 +454,7 b' def filterpatch(ui, chunks, chunkselecto'
     uiheaders = [uiheader(h) for h in headers]
     # let user choose headers/hunks/lines, and mark their applied flags
     # accordingly
-    chunkselector(ui, uiheaders)
+    ret = chunkselector(ui, uiheaders)
     appliedhunklist = []
     for hdr in uiheaders:
         if (hdr.applied and
@@ -472,7 +472,7 b' def filterpatch(ui, chunks, chunkselecto'
                 else:
                     fixoffset += hnk.removed - hnk.added
 
-    return appliedhunklist
+    return (appliedhunklist, ret)
 
 def gethw():
     """
@@ -501,6 +501,7 b' def chunkselector(ui, headerlist):'
         raise error.Abort(chunkselector.initerr)
     # ncurses does not restore signal handler for SIGTSTP
     signal.signal(signal.SIGTSTP, f)
+    return chunkselector.opts
 
 def testdecorator(testfn, f):
     def u(*args, **kwargs):
@@ -521,6 +522,7 b' def testchunkselector(testfn, ui, header'
         while True:
             if chunkselector.handlekeypressed(testcommands.pop(0), test=True):
                 break
+    return chunkselector.opts
 
 class curseschunkselector(object):
     def __init__(self, headerlist, ui):
@@ -528,6 +530,7 b' class curseschunkselector(object):'
         self.headerlist = patch(headerlist)
 
         self.ui = ui
+        self.opts = {}
 
         self.errorstr = None
         # list of all chunks

mercurial/patch.py

@@ -1106,8 +1106,8 b' the hunk is left unchanged.'
                         applied[newhunk.filename()].append(newhunk)
             else:
                 fixoffset += chunk.removed - chunk.added
-    return sum([h for h in applied.itervalues()
-               if h[0].special() or len(h) > 1], [])
+    return (sum([h for h in applied.itervalues()
+               if h[0].special() or len(h) > 1], []), {})
 class hunk(object):
     def __init__(self, desc, num, lr, context):
         self.number = num